Polymerization kinetics for single-and multiple-site catalysts

3 Polymerization kinetics for single- and multiple-site catalysts 

Olefin polymerization reactors will now be modeled using a bottom-up approach, from microscale to macroscale. In this section polymerization kinetic models will be introduced to describe polymerization rates and polymer microstructures, ignoring any phenomena that may take place in the mesoscale and macroscale. These models depend on the concentration of reagents and temperatures at the active site. As explained in the previous 

Length scale Macroscale (reactor scale) Mesoscale (particle scale) 

Phenomena Macromixing reactor scale concentration and temperature gradients Residence time distribution and particle size distribution Reactor temperature profiles, hot spots Process safety and reactor stability 

Fbrticle interactions, emulsion phase of a fluidized-bed reactor 

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